Timeline Sources
- Canada Public Health Association
- The Canadian Encyclopedia: Smallpox in Canada
- Canadian Museum of History
- Conquering the Crippler: Canada and the Eradication of Polio (Canada Public Health Association)
- Government of Canada – Coronavirus Disease
- Government of Canada – Health, Mumps
- Government of Canada: NACI Fifty Years of Service
- Government of Canada – Smallpox vaccine: Canadian Immunization Guide
- Hepatitis B Foundation
- The History of Vaccines (The College of Physicians of Philadelphia) – Timeline
- Immunize Canada
- Museum of Healthcare at Kingston – Vaccines & Immunization: Epidemics, Prevention and Canadian Innovation
- Royal Society of Canada – Canada’s Vaccine Legacy: Influenza, Polio & COVID-19
- U.S. National Library of Medicine: Canada’s first universal varicella immunization program